Fire door passage structure for robotic tube gallery inspection

Abstract

This application provides a fire door passage structure for robotic pipe gallery inspection, including a door frame and a door leaf. One end of the door leaf is hinged, and the upper end of the door leaf is provided with an inspection window for the inspection robot to pass through. An openable inspection door is provided at the inspection window. An avoidance groove is provided on the door frame near the inspection door. The inspection robot's overhead rail passes through the avoidance groove. Movable first and second sealing blocks are respectively provided on both sides of the inspection robot's overhead rail at the avoidance groove. The first and second sealing blocks are close to the inspection robot's overhead rail to close the gap between the inspection robot's overhead rail and the avoidance groove, thus solving the problem of the robot passing through the fire door during pipe gallery inspection.

Description

Technical Field

[0001] This utility model relates to the field of utility tunnel inspection, and in particular to a fire door passage structure for robotic utility tunnel inspection. Background Technology

[0002] Utility tunnel inspection robots typically move via overhead rails. Due to fire safety requirements, there are normally closed fire doors along the tunnel route. Therefore, the robot needs to pass through these fire door structures during inspection. Since the fire doors are normally closed, the common way to pass through them is by passing through the wall above the doorway. This requires additional cutting operations into the wall, which can easily damage the existing wall structure.

[0003] Another approach is to make the fire door an automatic door, with the inspection robot's track designed as a three-section system. The tracks on both sides of the door are fixed, while the middle track is movable. Before the robot passes through, the fire door is pre-opened, and the track automatically assembles between the two fixed tracks, forming a complete track. After the robot passes through, the movable track moves aside, and the fire door closes. This design preserves the integrity of the fire door and the wall as much as possible, but the mechanism is complex, the track assembly requires high precision, and it is prone to failure. Furthermore, the closing of the fire door relies on electricity, and in the event of a power failure, it can easily jam, posing a safety hazard. Utility Model Content

[0004] This invention provides a fire door passage structure for robot pipe gallery inspection, which solves the problem of robots passing through fire doors during pipe gallery inspection.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a fireproof door passage structure for robot pipe gallery inspection, including a door frame and a door leaf. One end of the door leaf is hinged, and the upper end of the door leaf is provided with an inspection window for the inspection robot to pass through. An openable inspection door is provided at the inspection window. An avoidance groove is provided on the door frame near the inspection door. The inspection robot's hanging rail passes through the avoidance groove. Movable first sealing block and second sealing block are respectively provided on both sides of the inspection robot's hanging rail at the avoidance groove. The first sealing block and the second sealing block are close to the inspection robot's hanging rail to close the gap between the inspection robot's hanging rail and the avoidance groove.

[0006] In the preferred embodiment, guide seats are provided on both sides of the clearance groove on the door frame, and slidable guide rods are provided inside the guide seats. The first sealing block and the second sealing block are each provided with connecting plates, and each connecting plate is slidably sleeved with each guide rod.

[0007] In the preferred embodiment, each connecting plate has an outwardly arranged rack at one end near the clearance groove, and the door frame is also provided with a rotatable gear, with the outwardly arranged rack of each connecting plate meshing with the two sides of the clearance groove respectively.

[0008] In a preferred embodiment, the door frame is further provided with a first linear drive device, which drives the connecting plate to move linearly.

[0009] In the preferred embodiment, the door frame is provided with a skeleton frame, and an opening groove is provided at the upper end of one side of the skeleton frame. A U-shaped guide groove structure is provided near the upper port of the opening groove, and the inspection door slides in the U-shaped guide groove structure.

[0010] In a preferred embodiment, the inspection door has a cavity with an opening at its lower end. A second linear drive device is located at the bottom of the opening slot, and the upper end of the second linear drive device is connected to the top of the cavity.

[0011] In the preferred embodiment, the skeleton frame is provided with multiple wiring holes.

[0012] The beneficial effects of this utility model are as follows: widening the upper beam of the door frame and opening a notch allows the inspection robot's overhead rail to pass through, ensuring the continuity of the overhead rail and preventing the robot from getting stuck on the rail, while not hindering the opening and closing of the door leaf; setting linked sealing blocks on both sides of the guide rail can close the hollow space of the clearance groove except for the overhead rail, improving fire resistance; through the design of the internal frame of the door leaf, the installation position of the inspection door is reserved, while ensuring the structural strength of the door leaf; the linear drive device of the inspection door adopts an embedded installation, hidden inside the door leaf, to prevent personnel from accidentally touching it from the outside and causing danger or damage to the linear drive device, while also improving aesthetics. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the portal structure of the utility tunnel.

[0015] Figure 2 This is a schematic diagram of the installation of the door frame and door leaf.

[0016] Figure 3 This is a schematic diagram of the closed state of the block.

[0017] Figure 4 This is a diagram showing the open state of a closed block.

[0018] Figure 5 It is a diagram of the skeleton frame structure.

[0019] Figure 6 This is a schematic diagram of the opening slot of the skeleton frame.

[0020] Figure 7 It is a half-section oblique view of the opening slot of the skeleton frame.

[0021] In the diagram: 1. Doorway structure; 2. Door frame; 201. Clearance groove; 202. Skeleton frame; 203. Opening groove; 204. U-shaped guide groove structure; 205. Wiring hole; 3. Door leaf; 301. Inspection window; 4. Door closer; 5. Inspection door; 501. Cavity; 6. Inspection robot rail; 7. First sealing block; 8. Second sealing block; 9. Connecting plate; 901. Outward rack; 10. Guide seat; 11. Guide rod; 12. Gear; 13. First linear drive device; 14. Hanger; 15. Inspection robot; 16. Second linear drive device. Detailed Implementation

[0022] like Figure 1-7 In the present invention, a fire door passage structure for robot inspection of pipe gallery includes a door frame 2 and a door leaf 3. One end of the door leaf 3 is hinged, and the upper end of the door leaf 3 is provided with an inspection window 301 for the inspection robot 15 to pass through. An openable inspection door 5 is provided at the inspection window 301. An avoidance groove 201 is provided near the inspection door 5 in the door frame 2. The inspection robot's hanging rail 6 passes through the avoidance groove 201. Movable first sealing block 7 and second sealing block 8 are respectively provided on both sides of the inspection robot's hanging rail 6 at the avoidance groove 201. The first sealing block 7 and the second sealing block 8 are close to the inspection robot's hanging rail 6 to close the gap between the inspection robot's hanging rail 6 and the avoidance groove 201.

[0023] When constructing the utility tunnel, a doorway structure 1 is reserved, and the door frame 2 is installed at the doorway structure 1. Since the door frame 2 and the door leaf 3 are post-installed structures in terms of process time, in order to avoid damaging the doorway structure 1, the inspection robot's overhead rail 6 needs to pass through either the door leaf 3 or the door frame 2. Given that the inspection robot's overhead rail 6 passing through the door leaf 3 will affect the normal opening and closing of the door leaf 3, the upper edge of the door frame 2 is widened, and an avoidance groove 201 is designed from the lower end of the upper edge of the door frame 2 for the inspection robot's overhead rail 6 to pass through.

[0024] Multiple hinges are installed on one side of the door leaf 3 and are hinged to the door frame 2. A door closer 4 is installed on the upper part of the door leaf 3 near the door rotation axis to keep the door leaf 3 in a normally closed state.

[0025] Because the inspection robot 15's hanger 14 requires lateral space, the clearance groove 201 needs to be wider than the inspection robot's rail 6. The reserved gap would reduce the fire door's airtightness against smoke and flames. Therefore, a sliding opening and closing first sealing block 7 and second sealing block 8 need to be designed on both sides of the clearance groove 201. When the inspection robot 15 is not passing through, the first sealing block 7 and second sealing block 8 close the reserved passage gap.

[0026] In the preferred embodiment, guide seats 10 are provided on both sides of the clearance groove 201 on the door frame 2, and slidable guide rods 11 are provided in the guide seats 10. The first sealing block 7 and the second sealing block 8 are each provided with connecting plates 9, and each connecting plate 9 is slidably sleeved with each guide rod 11.

[0027] In a preferred embodiment, each connecting plate 9 has an outwardly arranged rack 901 at one end near the clearance groove 201, and the door frame 2 is also provided with a rotatable gear 12. The outwardly arranged rack 901 of each connecting plate 9 meshes with the two sides of the clearance groove 201 respectively.

[0028] In a preferred embodiment, the door frame 2 is further provided with a first linear drive device 13, which drives the connecting plate 9 to move linearly.

[0029] The door frame 2 is provided with a bearing seat for mounting the shaft of the gear 12. However, since the door frame 2 is embedded in the door opening structure 1, there is no space inside to install the drive device. Therefore, the first linear drive device 13 is installed on one side of the clearance groove 201 to drive the first sealing block 7 or the second sealing block 8 to move linearly. The other sealing block moves synchronously in the opposite direction under the conventional action of the gear rack.

[0030] In the preferred embodiment, the door frame 2 is provided with a skeleton frame 202, and an opening groove 203 is provided at the upper end of one side of the skeleton frame 202. A U-shaped groove guide structure 204 is provided near the upper port of the opening groove 203, and the inspection door 5 slides in the U-shaped groove guide structure 204.

[0031] The outer side of the 202 frame is wrapped with fire-resistant steel decorative panels, and the interlayer can be filled with fireproof material.

[0032] The U-shaped groove guide structure 204 can be made of ceramic, which is wear-resistant, high-temperature resistant, and has a low coefficient of sliding friction. Furthermore, the contact surface with the inspection door 5 can be processed to be relatively smooth, reducing gaps and improving the airtightness of the fire door.

[0033] In a preferred embodiment, the inspection door 5 is provided with a cavity 501, the lower end of the cavity 501 is open, the bottom end of the opening groove 203 is provided with a second linear drive device 16, and the upper end of the second linear drive device 16 is connected to the top end of the cavity 501.

[0034] The second linear drive device 16 is embedded in the door leaf 3, which not only improves the aesthetics but also protects the second linear drive device 16 and prevents personal injury caused by accidental contact with the second linear drive device 16 from the outside.

[0035] In the preferred embodiment, the skeleton frame 202 is provided with multiple wiring holes 205.

[0036] The first linear drive device 13 and the second linear drive device 16 can be common electric actuators on the market. A typical structure is that a servo or stepper motor drives a vertical telescopic lead screw to rise and fall through a synchronous belt or gear transmission. A threaded sleeve is sleeved on the upper end of the lead screw. The threaded sleeve is prevented from rotating by a locking pin, but can slide up and down. Therefore, the lead screw can drive the threaded sleeve to move only up and down.

[0037] Since the second linear drive device 16 is embedded, multiple wiring holes 205 need to be reserved on the frame 202 to facilitate the wire wheel to pass through from the opening slot 203 all the way to the vicinity of the rotation axis of the door leaf 3.

[0038] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A fire door passage structure for robotic pipe gallery inspection, characterized in that: The system includes a door frame (2) and a door leaf (3). One end of the door leaf (3) is hinged. The upper end of the door leaf (3) is provided with an inspection window (301) for the inspection robot (15) to pass through. An inspection door (5) that can be opened is provided at the inspection window (301). An avoidance groove (201) is provided near the inspection door (5) of the door frame (2). The inspection robot rail (6) passes through the avoidance groove (201). On both sides of the inspection robot rail (6) at the avoidance groove (201), there are movable first sealing blocks (7) and second sealing blocks (8). The first sealing blocks (7) and second sealing blocks (8) are close to the inspection robot rail (6) to close the gap between the inspection robot rail (6) and the avoidance groove (201).

2. The fire door passage structure for robotic pipe gallery inspection according to claim 1, characterized in that: The door frame (2) has guide seats (10) on both sides of the clearance groove (201), and a sliding guide rod (11) is provided in the guide seat (10). The first sealing block (7) and the second sealing block (8) are each provided with a connecting plate (9), and each connecting plate (9) is slidably connected to each guide rod (11).

3. The fire door passage structure for robotic pipe gallery inspection according to claim 2, characterized in that: Each connecting plate (9) has an outwardly arranged rack (901) at one end near the clearance groove (201), and the door frame (2) is also provided with a rotatable gear (12). The outwardly arranged rack (901) of each connecting plate (9) meshes with the two sides of the clearance groove (201).

4. The fire door passage structure for robotic pipe gallery inspection according to claim 3, characterized in that: The door frame (2) is also provided with a first linear drive device (13), which drives the connecting plate (9) to move linearly.

5. The fire door passage structure for robotic pipe gallery inspection according to claim 1, characterized in that: The door frame (2) is provided with a skeleton frame (202). An opening groove (203) is provided at the upper end of one side of the skeleton frame (202). A U-shaped groove guide structure (204) is provided near the upper port of the opening groove (203). The inspection door (5) slides in the U-shaped groove guide structure (204).

6. The fire door passage structure for robotic pipe gallery inspection according to claim 5, characterized in that: The inspection door (5) has a cavity (501) inside, the lower end of the cavity (501) is open, the bottom end of the opening groove (203) is provided with a second linear drive device (16), and the upper end of the second linear drive device (16) is connected to the top end of the cavity (501).

7. The fire door passage structure for robotic pipe gallery inspection according to claim 6, characterized in that: The skeleton frame (202) is provided with multiple wiring holes (205).

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